jevrecipes

Recipe catalog / review-facets

Label the aspects of a product review

Which of these does review comment on: quality, price, shipping, service, or a defect?

You need to tag product reviews by the aspects they discuss in one call, for aspect-level ratings, routing defect reports, or filtering review feeds.

Explore this recipe interactively ยท Source and implementation guide

Use review-facets in TypeScript

Install with npm install jev-recipes. Requires Node.js 22.9 or newer and ES modules. Set TYPESAFE_API_KEY in your server environment for live calls, which send input to TypeSafe and use API quota. See the installation guide.

import { reviewFacets } from 'jev-recipes/review-facets';

const result = await reviewFacets({
  "review": "The blender itself is solid and crushes ice with no trouble, and for the sale price it was a steal. Unfortunately the box arrived dented and the lid gasket was torn, so it leaks. Support sent a replacement gasket within two days, which I appreciated.",
  "minConfidence": 0.8
});
console.log(result);

Input contract

FieldTypeNeeded
reviewstringRequired
minConfidencenumberOptional
Full input and result schemas
{
  "input": {
    "$schema": "https://json-schema.org/draft/2020-12/schema",
    "type": "object",
    "properties": {
      "review": {
        "type": "string"
      },
      "minConfidence": {
        "type": "number",
        "minimum": 0,
        "maximum": 1
      }
    },
    "required": [
      "review"
    ]
  },
  "result": {
    "$schema": "https://json-schema.org/draft/2020-12/schema",
    "type": "object",
    "properties": {
      "model": {
        "type": "string"
      },
      "usage": {
        "type": "object",
        "properties": {
          "input_tokens": {
            "type": "integer",
            "minimum": 0,
            "maximum": 9007199254740991
          },
          "output_tokens": {
            "type": "integer",
            "minimum": 0,
            "maximum": 9007199254740991
          }
        },
        "required": [
          "input_tokens",
          "output_tokens"
        ],
        "additionalProperties": false
      },
      "status": {
        "type": "string",
        "enum": [
          "ready",
          "review"
        ]
      },
      "detected": {
        "type": "array",
        "items": {
          "type": "string",
          "enum": [
            "mentionsQuality",
            "mentionsPrice",
            "mentionsShipping",
            "mentionsService",
            "reportsDefect"
          ]
        }
      },
      "labels": {
        "type": "object",
        "properties": {
          "mentionsQuality": {
            "type": "object",
            "properties": {
              "status": {
                "type": "string",
                "enum": [
                  "ready",
                  "review"
                ]
              },
              "verdict": {
                "type": "string",
                "enum": [
                  "present",
                  "absent"
                ]
              },
              "probability": {
                "type": "number",
                "minimum": 0,
                "maximum": 1
              },
              "confidence": {
                "type": "number",
                "minimum": 0,
                "maximum": 1
              }
            },
            "required": [
              "status",
              "verdict",
              "probability",
              "confidence"
            ],
            "additionalProperties": false
          },
          "mentionsPrice": {
            "type": "object",
            "properties": {
              "status": {
                "type": "string",
                "enum": [
                  "ready",
                  "review"
                ]
              },
              "verdict": {
                "type": "string",
                "enum": [
                  "present",
                  "absent"
                ]
              },
              "probability": {
                "type": "number",
                "minimum": 0,
                "maximum": 1
              },
              "confidence": {
                "type": "number",
                "minimum": 0,
                "maximum": 1
              }
            },
            "required": [
              "status",
              "verdict",
              "probability",
              "confidence"
            ],
            "additionalProperties": false
          },
          "mentionsShipping": {
            "type": "object",
            "properties": {
              "status": {
                "type": "string",
                "enum": [
                  "ready",
                  "review"
                ]
              },
              "verdict": {
                "type": "string",
                "enum": [
                  "present",
                  "absent"
                ]
              },
              "probability": {
                "type": "number",
                "minimum": 0,
                "maximum": 1
              },
              "confidence": {
                "type": "number",
                "minimum": 0,
                "maximum": 1
              }
            },
            "required": [
              "status",
              "verdict",
              "probability",
              "confidence"
            ],
            "additionalProperties": false
          },
          "mentionsService": {
            "type": "object",
            "properties": {
              "status": {
                "type": "string",
                "enum": [
                  "ready",
                  "review"
                ]
              },
              "verdict": {
                "type": "string",
                "enum": [
                  "present",
                  "absent"
                ]
              },
              "probability": {
                "type": "number",
                "minimum": 0,
                "maximum": 1
              },
              "confidence": {
                "type": "number",
                "minimum": 0,
                "maximum": 1
              }
            },
            "required": [
              "status",
              "verdict",
              "probability",
              "confidence"
            ],
            "additionalProperties": false
          },
          "reportsDefect": {
            "type": "object",
            "properties": {
              "status": {
                "type": "string",
                "enum": [
                  "ready",
                  "review"
                ]
              },
              "verdict": {
                "type": "string",
                "enum": [
                  "present",
                  "absent"
                ]
              },
              "probability": {
                "type": "number",
                "minimum": 0,
                "maximum": 1
              },
              "confidence": {
                "type": "number",
                "minimum": 0,
                "maximum": 1
              }
            },
            "required": [
              "status",
              "verdict",
              "probability",
              "confidence"
            ],
            "additionalProperties": false
          }
        },
        "required": [
          "mentionsQuality",
          "mentionsPrice",
          "mentionsShipping",
          "mentionsService",
          "reportsDefect"
        ],
        "additionalProperties": false
      }
    },
    "required": [
      "model",
      "usage",
      "status",
      "detected",
      "labels"
    ],
    "additionalProperties": false
  }
}

Saved example result

This hand-authored response demonstrates the contract. It is not a model accuracy measurement. Run it without an API key: npx jev-recipes demo review-facets.

{
  "model": "demo-fixture",
  "usage": {
    "input_tokens": 0,
    "output_tokens": 0
  },
  "status": "ready",
  "detected": [
    "mentionsQuality",
    "mentionsPrice",
    "mentionsShipping",
    "mentionsService",
    "reportsDefect"
  ],
  "labels": {
    "mentionsQuality": {
      "status": "ready",
      "verdict": "present",
      "probability": 0.95,
      "confidence": 0.95
    },
    "mentionsPrice": {
      "status": "ready",
      "verdict": "present",
      "probability": 0.93,
      "confidence": 0.93
    },
    "mentionsShipping": {
      "status": "ready",
      "verdict": "present",
      "probability": 0.88,
      "confidence": 0.88
    },
    "mentionsService": {
      "status": "ready",
      "verdict": "present",
      "probability": 0.96,
      "confidence": 0.96
    },
    "reportsDefect": {
      "status": "ready",
      "verdict": "present",
      "probability": 0.94,
      "confidence": 0.94
    }
  }
}

Evaluation evidence

Fixture only

No verified live accuracy measurement is available. Evaluate representative cases before using this decision in your workflow.

Use the evaluation guide to measure this decision on your own labeled cases.

Limitations

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